/*
 * Copyright (C) 2005 - 2013 MaNGOS <http://www.getmangos.com/>
 *
 * Copyright (C) 2008 - 2013 Trinity <http://www.trinitycore.org/>
 *
 * Copyright (C) 2010 - 2013 ProjectSkyfire <http://www.projectskyfire.org/>
 *
 * Copyright (C) 2011 - 2013 ArkCORE <http://www.arkania.net/>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef ARKCORE_MOVEMENTGENERATOR_H
#define ARKCORE_MOVEMENTGENERATOR_H

#include "Define.h"
#include <ace/Singleton.h>
#include "ObjectRegistry.h"
#include "FactoryHolder.h"
#include "Common.h"
#include "MotionMaster.h"

class Unit;

class MovementGenerator
{
public:
    virtual ~MovementGenerator ();

    virtual void Initialize (Unit &) = 0;
    virtual void Finalize (Unit &) = 0;

    virtual void Reset (Unit &) = 0;

    virtual bool Update (Unit &, const uint32 &time_diff) = 0;

    virtual MovementGeneratorType GetMovementGeneratorType () = 0;

    virtual void unitSpeedChanged ()
    {
    }

    virtual bool GetDestination (float& /*x*/, float& /*y*/, float& /*z*/) const
    {
        return false;
    }
};

template<class T, class D>
class MovementGeneratorMedium: public MovementGenerator
{
public:
    void Initialize (Unit &u)
    {
        //u->AssertIsType<T>();
        (static_cast<D*>(this))->Initialize(*((T*) &u));
    }
    void Finalize (Unit &u)
    {
        //u->AssertIsType<T>();
        (static_cast<D*>(this))->Finalize(*((T*) &u));
    }
    void Reset (Unit &u)
    {
        //u->AssertIsType<T>();
        (static_cast<D*>(this))->Reset(*((T*) &u));
    }
    bool Update (Unit &u, const uint32 &time_diff)
    {
        //u->AssertIsType<T>();
        return (static_cast<D*>(this))->Update(*((T*) &u), time_diff);
    }
public:
    // will not link if not overridden in the generators
    void Initialize (T &u);
    void Finalize (T &u);
    void Reset (T &u);
    bool Update (T &u, const uint32 &time_diff);
};

struct SelectableMovement: public FactoryHolder<MovementGenerator, MovementGeneratorType>
{
    SelectableMovement (MovementGeneratorType mgt) :
            FactoryHolder<MovementGenerator, MovementGeneratorType>(mgt)
    {
    }
};

template<class REAL_MOVEMENT>
struct MovementGeneratorFactory: public SelectableMovement
{
    MovementGeneratorFactory (MovementGeneratorType mgt) :
            SelectableMovement(mgt)
    {
    }

    MovementGenerator* Create (void *) const;
};

typedef FactoryHolder<MovementGenerator, MovementGeneratorType> MovementGeneratorCreator;
typedef FactoryHolder<MovementGenerator, MovementGeneratorType>::FactoryHolderRegistry MovementGeneratorRegistry;
typedef FactoryHolder<MovementGenerator, MovementGeneratorType>::FactoryHolderRepository MovementGeneratorRepository;
#endif
